مشكل في Javascript

$(function(){$('img').mouseover(function(){$(this).fadeTo('400',0.50);$(this).fadeTo('400',1)})});$(function(){$('img.luay2011').mouseover(function(){$(this).animate({rotate:'40deg'});$(this).animate({rotate:'-=40deg'})})});$(function(){$('img.luay2012').mouseover(function(){$(this).animate({rotate:'40deg'});$(this).animate({rotate:'-=40deg'})})});